Tested the Lexars today. 1355 photos taken today. 65+ are pink. I stopped counting at 65. I am 100% certain that this is not a problem with the card. Also, while going through Lightroom, I noticed that this problem started right before I sold my K5, and was happening with the K5. So, that's 4 camera's and 8 cards total. The problem is not the camera either. It has to be something with LR, my PC, or ??? Any other suggestions from anyone else?

Tested the Lexars today. 1355 photos taken today. 65+ are pink. I stopped counting at 65. I am 100% certain that this is not a problem with the card. Also, while going through Lightroom, I noticed that this problem started right before I sold my K5, and was happening with the K5. So, that's 4 camera's and 8 cards total. The problem is not the camera either. It has to be something with LR, my PC, or ??? Any other suggestions from anyone else?

Do you have access to another PC or laptop? If you do and it has a photo editor on it capable of reading RAW files, take your memory cards with the messed up photos on it and put them on the second computer. If the files are not messed up then the problem would be either in your computer or the way you transfer the photos to your computer.

If the files are messed up on the second computer, then start looking at the memory cards, and the camera. Because you are saying this is happening with 4 cameras and 8 memory cards, I would say the problem is either in your computer or the way you are transferring the photos to your computer.

Do you have access to another PC or laptop? If you do and it has a photo editor on it capable of reading RAW files, take your memory cards with the messed up photos on it and put them on the second computer. If the files are not messed up then the problem would be either in your computer or the way you transfer the photos to your computer.

If the files are messed up on the second computer, then start looking at the memory cards, and the camera. Because you are saying this is happening with 4 cameras and 8 memory cards, I would say the problem is either in your computer or the way you are transferring the photos to your computer.

I have a 2nd PC, but only 1 copy of Lightroom on the 1st PC. I've tried transfering through a plug-in USB card reader, a new in-PC card reader, as well as using the USB cable connected directly to the camera. Same results with all 3. I am sure that the problem has to do with the PC, just don't know where to look or what to try next.

I have a 2nd PC, but only 1 copy of Lightroom on the 1st PC. I've tried transfering through a plug-in USB card reader, a new in-PC card reader, as well as using the USB cable connected directly to the camera. Same results with all 3. I am sure that the problem has to do with the PC, just don't know where to look or what to try next.

On your second pc, I would suggest downloading one of the free image editors that can see RAW files to it, and see if you are getting corrupted files or if the pictures are good.

Doing this will eliminate if the problem is in camera/memory cards or in the computer. If you get good pictures on the second computer, then the problem is in your first computer or the way the files are transferring.

Do a search on the forum and you should find out what a lot of people like to use.

You can reassure yourself about RAW file integrity by using Lightroom's "Copy as DNG" function at import. That's what it's called in version 4. The conversion won't work if the RAW file is corrupted. Adobe's free DNG converter would do the same thing for non-LR users, and you could try that on a second PC without having to install LR. You can set up LR to copy original files somewhere else, so you keep Pentax DNGs separate from converted DNGs. I can't tell whether the conversion rebuilds a preview JPG or uses the original preview.